The data below are readings taken from three wearable devices over a 30 day period for one individual: The Basis peak, The fitbug Orb and the Xiaomi MiBand.
The individual weighs 72 KG and is 174cm tall
All devices were worn on the left wrist (the individual is right handed)
Some basic statistics are also given: correlation between each device for measurments such as "daily steps taken", "calories burnt" and sleep data
Generally the devices differ by a fair amount but correlate well for daily steps.
Sleep data was not consistent (correlation is 0.53 for example between the fitbug and the basis peak)
We currenly have no validation data for the heart rate readings taken from the Basis Peak.
Correlation Steps Fitbug Basis Miband calories Fitbug Basis Miband Sleep Fitbug Basis Miband Deep Sleep Fitbug Basis Miband % Deep Sleep Fitbug Basis Miband Sleep-Quality Fitbug Basis Miband Disturbed sleep / toss-turn Fitbug Basis Miband
Fitbug 0.91 0.93 Fitbug 0.90 0.89 Fitbug 0.53 0.61 Fitbug NA NA Fitbug NA NA Fitbug 0.01 NA Fitbug 0.50 NA
Basis 0.94 Basis 0.85 Basis 0.34 Basis 0.06 Basis -0.01 Basis NA Basis NA
Miband Miband Miband Miband Miband Miband Miband
The data below are:
- Total steps taken per day
- Total number of minutes for sleep (split between light, heavy, REM where available)
- Calories burnt per day (the miband only gives calories burnt during periods of "activity")
- Average heart rate over differing periods of each 24 hour period
 
Steps
13/01/2015 14/01/2015 15/01/2015 16/01/2015 17/01/2015 18/01/2015 19/01/2015 20/01/2015 21/01/2015 22/01/2015 23/01/2015 24/01/2015 25/01/2015 26/01/2015 27/01/2015 28/01/2015 29/01/2015 30/01/2015 31/01/2015 01/02/2015 02/02/2015 03/02/2015 04/02/2015 05/02/2015 06/02/2015 07/02/2015 08/02/2015 09/02/2015 10/02/2015 11/02/2015 12/02/2015
Fitbug 8233 8960 10096 12257 9988 9614 11435 11675 14507 10043 6346 9518 9823 9303 7851 6074 12106 10765 14186 13776 12360 12130 14017 12036 9707 18072 12269 8035 7672 8977
Basis 7015 5827 6867 7842 9228 6034 7550 9901 9625 12602 7769 3035 7210 7270 7785 6815 3208 9177 9458 10495 8991 9752 10415 11823 8998 5912 11862 8980 6530 5478 6798
Miband 7917 7044 8429 9389 11092 8100 9222 11288 10965 14056 9657 4743 9070 8809 8529 7445 5796 11052 10578 11917 12294 10684 11784 12892 10892 8188 13658 12042 7123 6662 5210
Sleep
 
Fitbug NOTE: fitbug starts monitoring when you press the button but its 'total time' is from when it thinks you fell asleep (it tells you how many minutes it took you to fall asleep "Time to fal asleep") till when you press the button again
total time 510 517 493 523 509 482 473 518 473 492 520 574 504 535 520 522 496 533 458 455 524 567 538 536 513 576 521 521 512 515 506
disturbed 21 28 7 20 29 57 18 33 13 14 31 12 27 22 16 27 24 25 4 0 32 60 15 3 14 18 18 18 4 35 22
total sleep 489 489 486 503 480 425 455 485 460 478 489 562 477 513 504 495 472 508 454 455 492 507 523 533 499 558 503 503 508 480 484
disturbed N 7 7 3 4 8 9 4 7 5 5 7 5 5 6 6 5 6 6 2 0 8 12 3 2 4 6 5 5 1 5 6
score 0.93 0.89 0.97 0.97 0.91 0.85 0.9 0.93 0.95 0.97 0.91 0.97 0.9 0.96 0.96 0.95 0.95 0.95 0.97 0.99 0.91 0.89 0.96 0.99 0.97 0.96 0.93 0.93 0.99 0.93 0.95
Basis
total sleep 482 498 486 500 522 444 480 465 480 488 544 589 508 533 510 262 423 539 442 459 447 555 568 532 512 575 500 479 516 489 494
REM 120 115 118 90 125 94 146 137 139 109 134 184 121 127 145 65 89 148 114 108 113 146 138 111 133 133 126 78 153 126 124
Light 234 292 241 305 310 298 263 265 232 254 324 248 233 310 251 147 274 283 204 254 230 322 332 326 248 312 243 302 239 261 298
Deep 128 91 125 102 87 52 71 59 109 125 86 157 154 96 114 50 60 108 124 95 104 87 98 95 131 128 126 96 124 102 72
unknown 0 0 2 3 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 2 5 3 0 0 0
interuptions N 1 0 0 0 0 1 0 1 0 1 0 0 1 0 0 0 1 0 0 0 1 1 2 0 0 0 2 0 0 2 0
interuptions Mins 45 0 0 0 0 4 0 19 0 1 0 0 1 0 0 0 2 0 0 0 1 3 2 0 0 0 2 0 0 9 0
toss/turn 33 30 21 21 36 38 22 24 17 24 20 21 26 25 22 11 22 29 20 18 29 29 34 15 29 33 24 25 20 25 24
score 0.85 0.91 0.89 0.86 0.91 0.88 0.94 0.11 0.78 0.88 0.8 0.37 0.82 0.9 0.88 0.55 0.91 0.9 0.6 0.95 0.87 0.37 0.33 0.91 0.88 0.65 0.87 0.86 0.9 0.86 0.74
%deep 0.27 0.18 0.26 0.20 0.17 0.12 0.15 0.13 0.23 0.26 0.16 0.27 0.30 0.18 0.22 0.19 0.14 0.20 0.28 0.21 0.23 0.16 0.17 0.18 0.26 0.22 0.25 0.20 0.24 0.21 0.15
Miband
total sleep 486 504 499 530 473 462 481 547 527 491 504 600 509 508 559 520 494 482 471 464 526 642 540 527 498 547 478 522 517 442 517
light 323 335 291 222 334 312 180 342 193 295 333 325 356 309 403 270 270 343 321 216 396 342 354 253 227 262 235 309 265 228 373
deep 163 169 208 308 139 150 301 205 334 196 189 275 153 199 156 250 224 139 150 248 130 282 186 274 271 285 243 213 252 214 144
%deep 0.34 0.34 0.42 0.58 0.29 0.32 0.63 0.37 0.63 0.40 0.38 0.46 0.30 0.39 0.28 0.48 0.45 0.29 0.32 0.53 0.25 0.44 0.34 0.52 0.54 0.52 0.51 0.41 0.49 0.48 0.28
Calories
Fitbug 2036 2082 2136 2230 2124 2114 2141 2193 2294 2122 1954 2130 2123 2075 2018 1948 2186 2145 2279 2257 2188 2180 2275 2196 2104 2491 2189 2034 2024 2066
Basis 2262.7 2203.7 2223.9 2326.9 2434.1 2422.5 2285.8 2412.6 2446.6 2623.6 2318.1 2022 2286 2260.5 2177.1 2127.5 1780.3 2412.2 2368.3 2525.1 2369.8 2377.9 2433.8 2543 2392.3 2136.1 2663.1 2370.8 2148.5 2091 2263.7
Miband 311 284 336 367 561 450 370 467 428 565 387 186 482 356 353 296 234 447 429 462 491 437 456 528 437 398 594 482 287 266 209
 
Heart rate
Basis
0:00 - 06:00 59 58 64 58 64 65 66 61 63 62 63 64 60 61 60 60 57 58 70 60 64 62 66 59 58 67 65 61 58 60 64  
06:00 - 24:00 75 76 77 79 81 92 73 79 81 77 80 77 80 75 75 69 77 78 81 82 80 80 76 74 80 82 82 76 71 73 75  
asleep 59 58 63 58 63 68 65 61 63 62 63 64 60 60 60 59 57 58 68 59 64 61 65 59 58 66 64 60 58 60 64  
awake 77 78 78 80 86 95 74 80 82 78 82 80 84 76 77 70 79 80 85 86 81 82 77 75 82 86 87 78 73 74 76  
all day 71 72 73 73 77 70 71 74 76 73 75 73 74 71 71 66 70 73 78 76 76 75 73 70 74 77 77 72 68 69 72  
NOTES
Comments' dates
14/01/2015 very tired all afternoon (dull meeting at 10am for 2.5 hours)
17/01/2015 Nose cold at night. Felt like I had a temperature and felt uncomfortable, but now I feel like I had a good nights sleep
21/01/2015 voice was hoarse from 4pm and slight cough all night
23/01/2015 voice was hoarse all day and very bad night sleep with chesty cough
24/01/2015 chesty cough
24/01/2015 No coffee
25/01/2015   a little chesty cough at night
25/01/2015 No Coffee
26/01/2015 No coffee
01/02/2015 Cold is back, coughing and runny nose
02/02/2015 Cold is back, coughing and runny nose
03/02/2015 Knackered today, poor focus, need to sleep